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>>>>> "Alexander" == Alexander Walz <> writes:

 Alexander> Hello Luiz Henrique,
 Alexander> you are right with block() , I am sorry.

 Alexander> I get this in Lua 5.1:

The REPL decides whether it has a complete statement to execute by doing
a load() on whatever it has, and seeing if there's a syntax error at the
very end of the input. So in your example, the first two calls to
block() are for the strings [[do]] (which fails) and [[do print("Lua")]]
(which also fails), and then the third call for [[do print("Lua") end]]
succeeds and the REPL then runs the resulting chunk.